Yes, the government decided that the only way they could pull off the boston bombing is by having a couple of joggers involved with a super duper secret "handoff" of the explosive device. The government decided to go with the most complicated and filmed hand-off possible, conveniently located right at the finish line, so as to fool the rest of the American public.

Or, perhaps there were a couple of doofuses who decided that they wanted to be tough and kill and hurt some people.

But no, let's go for the most out there explanation, which includes a not only two joggers, a complicated toss hand-off of said device, police cooperation in kicking the device away, and a game card. THAT makes much more sense. /S